Still.



PATENTED JAN. 8, 1907.

A. S. CARR.

STILL. APPLICATION FILED APR.l9,l904.

UNITED s'rA rin-s PATENT orrron ARTHUR S. (V /ARR, lddTTIES BURG, MISSISSIPPI. I i

' STILL.

Specification of Letters Patent.

. pplicatiou filed April 19,1904. Serial N0.O3,913.

No. 840,607. Patented Jan. 8, 1907.

To (all mlmmit may conc rn: the still-house or inclosure inwhich the still Be it known that I, Aa'rnun S. CARR, a is arranged, the same being of any preferred citizen of the United States, residing at llatconstruction and having arranged in its top a tiesburg, in the countyof Perry andtatg an elevator 2 for feeding wood to the hopper 6e 1- of Mississippi, have invented a new, and use- 3, which is arranged over the charging-door t ful Still, of which the following is a speoifica- 4 of the retort 5. The retort is made of any Linn, suitable material and is capable of withstandr i This invention has relation to stills; and ing pressure and is supported in an inclined g it consists in the novel construction and arposition by a foundation 6 of brick or ma- 6 5,, m rangementof its parts, as hereinafter shown sonry. Extending the entire width of the,. Q, and described. foundationis a flue 7, constituting the furs The object of the invention is to provide, a rapid and thoroughly practical manner for distilling turpentine, to conserve uncon- 15 laminated the first distillate orwhite tur- \entine, and to etlect distillation of the heavier oils and tar; furthermore, to facilitate charging and emptyin of the retort, ell'ecting thereby a saving in labor and a con- 20 sequent reduction front the cost of procedure.

The still consists, primarily, of a foundation, a flue constituting a furnace,a header arranged within the flue and out of contact 2 5 with the walls thereof, means for supplying steam and compressed air to the header, an inclined stationary retort supported by the foundation and having its ends disposed beyond the heating zone of the furnace, said 'go retort being steam-tight, a-charging-door combined with. the upper end of the retort, a discharging-door combined with the lower end thereof, a conveyer arranged adjacent to the discharging-door, a perforated pipe nace, an' arch-wall 8 serving to keepthe products of combustion from impinging the retort. V chne, shown, the feeding of the wood thereto is facilitated, and the necessity, of, i

any handling is thus obviated. The lower portion of the retort is provided with a By disposing the retort on an incharging-door 9, this door, as well as they charging-door l, being comblned with the p retort in such manner as to present agsteame tight closure.

The ends of the retort are beyond the heating zone of the furnace and are thus 8o much cooler than the intermediate portion of the retort, and this arrangement is of greatiutility, for the reasonthat itprevents destructive decomposition of the heavier vapors that pass to the bottom of the retort 85 and are caught, as will be hereinafter described, while the lighter vapors are carried oil to a suitable condenser, presently to be described. The greatest liberation of the vapors and their products of distillation 5 disposed upon the lower side oi the retort takes place at the center of the retort, and

and terminating short of the dischargingdoor, a -dischargingpipe arranged in. the lower side of the retort between the dlscharging-door and the lower terminal of the 1 v43 perforated pipe, a connection between the perforated pi 50 open communication betw e and the header whereby the former may )e supplied with heated compressed-air or compressed and superheated steam, a vapor-ofltake pipe connected with 45 the top, a condensing-coil with which the oil'- ward through t cop the saidretort hustion,the object of the headerb by the provision of suitable'blast mechanism, l i 1 described farther on, the liberated'vapors are driven away "from the zone, ;'those that are heavier passing to the bottoni and those that are light passing to the top. of the retort f a n l thence to a condenser. v

Arranged along the bottom of themetort 'l is a perforated Ipipe ll), which extends out with a valve 12, the pipe 11 being connected with a header or heating-pipe 13, arranged within the ilue and in position to be directly V e retortnear its upper end-lid and is connected with a pipe 11, provided impinged against by the products of com- 165 and the condensing-coil, whereby the vapors l the air or the air and the steam, as the case Ina pass from the steani-tlght rel ort to the i may be, before passing to the retort, thereby coi said safety-valve mechanism adapted to automatlcally close when the pressure within causing a rapid distillation of the turpentine and other products in the wood.

eing to heat (Jonnect- 10o 55 the retort is reduced.

1 ing with the header 13 is one end of a pipe 14, Referring to the drawings,

l. designates l the opposite end of which communicates moisture present to effect proper distillation and to form a vehicle for carrying oil the vapors, a steam-boiler 17 is provided which connects through a pipe 18 with the pipe 14, the valve 19 on the pipe 14 operating to shut 1 off the supply ofsteam thereto when desired.

Connecting with the upper side of the retort near-its upper end is a vapor-ofltake pipe 20, which leads to a condensirig-coil 21. Said coil is disposed within a tank 22, containing cool water, the lower end of the coil being projected through the tank to convey the condensed vapors to a suitable receptacle 23. The vertical portion 24 of the pipe carries a safety valve'25, which will operate to close the exit through the pipe 20 until a predetermined pressure has been reached, thereby insuring that the proper distillation of the wood is effected. The pipe 20 carries off the first distillate or white turpentine in an uncontaminated condition to the condensing coil, whence it is removed in the manner ahovedescribed. The lower under side of' the retort is provided with a discharge-pipe 26, which is designed to empty into a reservoir or receptacle 27, this receptacle being provided to catch heavier oils and tar escaping fromthe' retort.

In the initial operation of the stillthat is to say,-in securing the first distill atethe fire is applied in the furnace and compressed air and steam are permitted to pass through the pipe 14 to the header 13, where the steam and air are heated, and thence pass to the retort, where they escape in jets through theperforations 28 of the pipe 10. The employment of this pipe is of the greatest importance, inasmuch as" it insures proper treatment of the whole mass of stock throughout the extent of the retort, which could not be effected if the air and steam were simply shot into the retort from a nozzle. The presence of air and steam will cause a pressure within the retort, and when this reaches a prede termind point the safety-valve 25 automatically opens and allows the vapors to pass to the condensing coil, where they are caught. When all the turpentine has been dist lled, the valve 19 is closed and the heated air-under pressure is alone sup lied to the retort, which causes" the distil ation from the wood of the tar and heavy oils, which escAaipe through the pipe 26 to the reservoir 27.

ter the distilling is com leted the dischargedoor 9 is opened, and t e wood or stock is discharged u on the conveyer 29, disposed adjacent to t leend of theretort. When the retort is to be charged, the charging-door 4 is opened and 'the requisite amount of wood in proper condition is supplied to the hopper 3, whence it escapes to the retort,

It will be seen from the foregoing description that although the still of this invention is exceedingly simple of construction it combines in a novel and proper manner all of the essential elements necessary for producing rapid and effective distillation, and, moreover, by disposing the retort in the manner described the vapors are uncontaminated and escape from the retort in a pure =oomdiition.

Having described my invention, What I claim as new, and desire to secure by Letters Patent, is p In astill the combination with a-founda'tion, of a flue constituting a furnace, a header arranged within the flue and out :of contact with the walls thereof, means for up lying steam and compressed air to the li er, an

inclined stationary retort supported by the foundation and having its ends disposed be yond the heating zone of the furnace, said retort bein steam-tight, a chargingdcor combined with the upper endof the retort, a dischargingdoor combined with the lower end thereof, a conveyer arranged adjacent to the discl iarging-door, a perforated pipe disposedupon the lower side ofthe retort,

and terminating short of the dischargingdoor, a discharge-pipe erran ed in the lower side of the retort between tie discharging door and the lower terminal of the perforated pipe, a connection between the perforated pipe and the heater whereby the former may be supplied with heated compressed air, or heated compressed air and superheated steam, a vapor-oiltake pipe connected with the top of the retort, a condensing-coil with which the oiTtake-pipe connects, and a safety-valve mechanism located upon said offtakepipe and adapted to be automatically operated by the accumulated pressure within the retort to open communication between the saidretort and the condensingmoil whereby the vapors may pass from the steam-tight retort to the coil, said safety-valve mechanism adapted to automatically close when the pressure within the retort is reduced.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

I I ARTHUR s. (ARR Witnesses:

.J. P. WILLIAMS, W. P. Jones. 

